77 lines
1.9 KiB
C#
77 lines
1.9 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Web;
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using System.Web.UI;
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using System.Web.UI.WebControls;
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using System.Data;
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using System.Text;
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namespace FineUI.Examples.basic
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{
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public partial class login_captcha : PageBase
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{
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protected void Page_Load(object sender, EventArgs e)
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{
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if (!IsPostBack)
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{
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LoadData();
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}
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}
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private void LoadData()
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{
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InitCaptchaCode();
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}
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/// <summary>
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/// 初始化验证码
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/// </summary>
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private void InitCaptchaCode()
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{
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// 创建一个 6 位的随机数并保存在 Session 对象中
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Session["CaptchaImageText"] = GenerateRandomCode();
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imgCaptcha.ImageUrl = "~/basic/captcha/captcha.ashx?w=150&h=30&t=" + DateTime.Now.Ticks;
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}
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/// <summary>
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/// 创建一个 6 位的随机数
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/// </summary>
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/// <returns></returns>
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private string GenerateRandomCode()
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{
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string s = String.Empty;
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Random random = new Random();
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for (int i = 0; i < 6; i++)
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{
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s += random.Next(10).ToString();
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}
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return s;
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}
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protected void btnRefresh_Click(object sender, EventArgs e)
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{
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InitCaptchaCode();
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}
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protected void btnLogin_Click(object sender, EventArgs e)
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{
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if (tbxCaptcha.Text != Session["CaptchaImageText"].ToString())
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{
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Alert.ShowInTop("验证码错误！");
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return;
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}
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if (tbxUserName.Text == "admin" && tbxPassword.Text == "admin")
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{
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Alert.ShowInTop("成功登录！");
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}
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else
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{
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Alert.ShowInTop("用户名或密码错误！", MessageBoxIcon.Error);
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}
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}
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}
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}
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